Avaya S8700 Maintenance Manual page 1884
For multi-connect configurations
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Also See for S8700:
- Maintenance manual (700 pages) ,
- Installing manual (342 pages) ,
- Installing (326 pages)
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Maintenance-Object Repair Procedures
Looped-back data
stream pattern is
generated by digital
port 1 and checked
by digital port 2 on
the TN771
External DS1 Facility
Figure 8-67. ISDN-PRI Outgoing Test Call
8-1162
Issue 1 May 2002
SPE
UN332
TN1655
MSSNET
PKT-INT
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Digital
Digital
Port 1
Port 2
TN771
Maintenance/Test
B-channel carries
looped-back test signal
Far-End
Equipment
PBX Equipment
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TN464
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DS1
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Interface
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Loop-back
Control
Circuitry
Packet
Bus
TDM
Bus
D-Channel instructs
far end to connect
loop-back circuitry
across B-channel
signal
555-233-143
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Troubleshooting
